Headlight



sept. A21 192s. 1,600,205

C. H. ALLEN HEADLIGHT Filed August 2 1923 'Z v Y @ik hay I l ,M5

Patented Sept. 21, 1926.

umrrn STATESv PATENT ePrice.

errantes n. ALLEN, or calorico, ILLINoIfsfnssIGiTon V'ro THE ATTLENLITE company',

or calorico, ILLINOIS, A conro'iiarron or ILLINOIS.

HEADLr-GHT;

' VApplication nire-,d August 2,

This invention relates to headlights for automatve vehicles and the ,like wherein a combination of far and near illumination is required with a height limitation on the light rays issuing therefrom, i

It is an important object of this invention to provide a headlighty reflector wherein it is possibleto avoid the production of objectionable glare which would interfere with pedestrians and drivers approaching the headlight.

Other and further important objects of this invention will be apparent from the disclosures in the specification and accompanying drawings.

This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front plan View of a headlight embodying featuresof this invention with the lensfand rim omitted to disclose only the essential features of this invention.

Figure 2 is a slightly enlarged section on the line 2-2 of Figure 1.

Figure 3 is a section on the line 3&3 of Figure 2.

As shown on the drawings:

The reference numeral 5 refers to a reflector casing which may also be the outside casing for the entire headlight altho preferably it is an element insertediin an inclosing case which `may be of the drum type if so desired. The casing 5 has oppositely disposed horizontal extensions 6 which carry supporting brackets 7 secured thereto in any convenient manner. These brackets form a central support for a light source 8 mounted to give indirect light. This light source is mounted a substantial distance' below the true center of the casing 5, so that ahorizontal line passed through the light source and hereinafter called the light axis is not the axis of the cylindrical part of the casing 5. The rear end of the casing is closed by a continuation thereof in the general form of a segment of a sphere, although the upper 9 and ther lower 10'portions are formed to slightly different radii,

The reiiectors proper comprise upper and lower segments 11 and 12, the upper segment being a segment of a sphere whose radial center 13 falls slightly below the licrht axis and considerably to the right of the light laas; serial NQ. 655,160.

vehicle. It will be noted that the arrangement of the light` axis below the center-.line ofthe casing tilts the chord of the upper Segment at wel@ Of approximately le degrees to the'vertical. The lower segment l2 has a radius somewhat longer than the upper segment, resulting in a more concentrated beam of light. Further, the radial center 14 is moved to 15 in producing the front and rear surfaces of the reflector respectively, resulting in a reflector wherein the edges are thinner than the center thus further concentrating the beam of light rays. Due to the location of the light axis the chord of the lower segment makes an angle of approximately 4: degrees with the vertical, and the segment is so formed as to extend up to the approximate center of the casing resulting in a large increase in the reflecting surface of the lower segment over the upper segment. The radial centers for the lower segment are arranged very slightly above the light axis. Such an arrangement of course results in a rising beam of light so that only a slight elevation of the centers is permissible. This is desirable however, to obtain the greatest degree of distant il lumination 4consistent with avoiding the production of glare.

The two segments are so cut that they do not meet, thus .producing a nonreflecting not purposed to limit the same otherwise than indicated by the appended claims.

I claim as my invention 1. A headlight comprising a body portion having a closure at its rear, a light source, the axis of said light source being arranged appreciably1 below the center of said body portion, and reflectorscomprising loo segments of spherical surfaces of different radii mounted on the closure of said body portion, the segment of greater radius being mounted in the lower part of the closure and extending substantially to the center of the casing, and the segment of least radius being mounted above said first mentioned segment with a nonreflecting space. left therebetween.

2. A headlight comprising a casing, a light source therein mounted below the center of said casing and pointing rearwardly, and reflectors mounted across the rear of said casingA comprising an upper segment of a spherical surface mounted to have a radial center slightlyy below the axis of the light source and in front of said light source, and a lower -segmental reflector of greater radius having its radial center slightly above said axis and to the front of the center of said first mentioned segment.

3. A headlight comprising a casing, a light source therein mounted below the center of said casing and pointing rearwardly, and reflectors mounted across the rear of said casing comprising an upper segment of a spherical surface mounted to have a radial center in front of said light source, and a lowerl segmental reflector of greater radius having its radial center to the front of the center of said first mentioned segment, said lower segmental reflector having the Same radius of' front 'and' back surfaces whereby a concentrating eect is had on the beam oi reflected light.

In testimony whereof I have hereunto subscribed my name.

oHARLns n. ALLEN. 

